Method of and apparatus for finishing water-meter disks



F. LAMBERT. METHOD OF AND APPARATUS FOR FINISHING WA TER METER DISKS APPUCA-IION FILE D OQTQI. 1919.

7 377 98 Patented May 10, 1921.

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J 9 l L 6 v JNVENTOR.

ATTORNEY.

UNITED IAI FRANKTVIVLIIAMBERVT, or BRooKLYiv, NEW YORK, ASSIGNOR TO PATENT ,orrica THOMSON METER COM- PAN-Y; 0F BROOKLYN, NEW YORK, A CORPORATION- or NEW JERSEY.

mn'rnonor "AND APPARATUS r03 rrnisHnIewAtrER-Mmria Disks.

To all whom it may concern 1 Be it known that I, FRANK LAMBERT, a citizen of the United States of America, and resident of the borough of Brooklyn, county of-Kings, city and State of New ork, have invented Methods of and Apparatus for Fmishing Water-Meter Disks, ofwhich'the following is a specification. '33

My invention relates to a methodiofand apparatus for finishin the disk-pistons of nutating disk meters. guch disks (as shown, for example, inmy PatentgNo; 51,155,667, dated October. 5, .1915, though the -d1sk1 type of meter, is much older than said patent) are provided with a. centr alspherlcal portion, also with a slot extending from oneiiside of the disk to the central sphericalportion.

-: In practice the 'sides of this slot areib'evele'd,

(for in operation, .a projecting .wall opfidiaphragm, as it. is termed; ;11'es: =,wathJn this slot, and remains stationary, awhile the' "(118k nutates this beveleedgedaslot11s: ustoma arily formed: by rmakin'g two'obliqueleuts with a large slitting' saw, almost to-tlie face of the central spherical portion To prevent cramping action between-thewedge 'ofathe disk and the diaphragm, especially whenthe side of the slotcbegins to wear, it is found desirable to relieve the 'slotlaterally' near the central-sphere of .the-disk;-and to prevent leakage betweenuthe concave POItlOIl of the diaphragm and the bottom; of. the slot it is essential-to finishlaccurate'ly that portion of the sphere which forms the end of the slot; and in'thepast it has been thought necessary to do this; work byhand, and mostly if not entirely by fil1ng. Bythe-pres ent inventionI provide a method of and means for doin thisfinishing work by machine work. y invention consists, therefore, in a method of and apparatus for enlarging or relievin d the saldaslot', at its base, and also of finishing truly spherically the surface of the sphere or ball adgacent to and at the base of said slot.

The object of my invention is tocheapen and render more accurate the work of fin ishing water -meter disks such as referred to. V

I will now proceed to describe my nvention with reference to the accompanying drawings, in which one form of apparatus embodying the apparatus portion of my invention and adapted to carry out the method portion of my invention is illus Specification of Letters Patent. 7

- Application filed October 1, 1919; Serial No. 327,655;

Patent-ea Ma 10, 1921.

trated, and: willtheni point out the novel features in claims; In the said drawings: Figure 1 shows a side elevation of the said apparatus, "theview also" showing a meter disk'jin place as whcnit is being acted upon by -th e cutter. Fig. 2 shows a' r" ront view of the arbonsripport and diskgu1de',.-'and Fig.3 -'a top view of the completed meter disk; Fig. 4: shows, on a larger. scaleft han the previous views, a cent'ral axial 'sectionof the milling 'cutter used. In the drawings, 1 designates the meter disky-whiclrhas, =as shown, a spherical or ball-shaped centrahportion 3;, and a' slot '2 extending to *saidball-shaped ceritri; .The sides 4 of this slot2 are beveled', and at the base: of .tlie sld't thelattei is widened. or ,irelie'vedfi ias iii'dicatedat5,15? *l 6 designatesaanadjustablerest; for; E the ball 3,? upon whijch "rest the' diskimay be held and oscillated while the cutter 'isacttatable' arbor 8." "The endof the cutter is ;concave,fas shown. This arbor is held in a chuck 8, mounted onthe rotatable spindle of the machine Sf-Q- andsaid chuck maybe considered as representing means for rotating as wellasih'oiding the-arboii' Since the arbor '8 must pass freely through the slot 21of the-disk, and therefore must be soinewhatdong and of quite small diameter -in proportion to its length. it requires sup port nea'ritsouter end; and therefore I provide" a supper hand rest. for the arbor, whichservesto holdit'very exactly in line, and consists 'oifit'wio closely-approaching jaw members 9fprojer-ting-tromfa ringbase 10 securedcto a'rfixed'portion ofthe machine. These jaw-members 9 also must pass freely through the slot 2 of the meter disk, and hence must be quite narrow; likewise, they serve as guides for the disk during the milling operation and hence their sides are fiat. They are of considerable height, however, and so are amply stifi for their purpose. The members 9 are in effect a plate having a bore or hole 9 running in the direction of the plane of the plate for receivin and steadying the arbor 8. Obviously, i? the arbor. 8 is reduced in diameter, the hole 9" will not cut through the "sides of Iriembers 9, in which case the members 9 would be united and form' a single guiding plate. A V

In finishing the disk, "the said'disk, slotted nearly to the surface of,the ball,3, but not quite thereto, the slotnot yet being widened as indicated at 5, 5, is placed on the support ,6, one of the jaws 9 being then Within the slot; and then, whilethecutter 7- rotated,-

the disk is rocked a couple of times up and down slowly about the geometrical center of its ball 3 (the cup shapeand adjustmentof the support 6 permitting this) and thereby the teeth ofvthe end portion of .the cutter are caused to continue the cutting of the slot 2 to the very face of the ball and to finish:ac-

curately the surface of the ball in and adjacent to the said slot;;;while at the {same time the teeth on the sidef themutter-enlargelor relieve said slot, as indicgttedatfi, During this 7 operation; the disk .is;=,g'l1 i ded and held steady by the arbor vsupportg9, In-this way hand work on the disk,- suchas was consid- .ered necessary previously, is; avoided, and an Oscillating the sphericaI-pdrtionof the disk in working contact {with a rotating concave faced cutter a 2. The herein-described methodpf finishing the slots of slotted meteridisks-having spherical central portions, which consists in holding the spherical portion of the disk on a support which permits oscillation of the disk about a fixed center, and oscillating said spherical portion in worldng contact with a rotating concaveiaced-cfltter;

3. Apparatus for finishing the; slots of slotted meter-disks having spherical central portions, comprising a rotatable,:arbor,'ia milling cutter carried by said. arbor and adapted to finish'the slot at its inner 'end',;a plate having an opening running in. the plane thereof to support and guide said arbor, and a-support for holding the meter disk against said cutter and permitting oseillation of the disk, saidzpl'ate being adapted to enter the slot of the disk and guide the same inits oscillating movements.

4;. Apparatus for finishing the slots of l ted meter-disks ha a splwrical. ntra portiong eomprising a rotatablearbor carrying a milling cutter-adapted to finish the slot at its-inner end, a,s.teadyrest for the arbor adapted to" enter the'slot of the disk and to act as a guide for the disk in its oscillating motion, and means for rotating said arbor.

-5; Apparatus for finishing the inner end of the slot of slotted meter disks having spherical central portions, comprising a-rotatable arbor carrying a milling-cutter adapted :to. finishrthe slot; at its inner end, a steadyrest for the arbor, means for rotating said arbor, and a support for recelvlng the spherica1- central portion of said j'disk and permitting oscillation thereof, the 'center, of oscillation of the disk being-substantially in line with the a xissof rotation of the cutter. 6 r Apparatusfor finishing :slotted meterdis'ksihavingspherical central portions, comprising. a rotatableai'bor adapted to carry a cutting- Ztool; andrsteady-rest'j aws embracing said arbor; neartheicutter-carrying portion thereof; andfiadaptedito suppontand steady ithesamew iiu' f. ziji v+1 :i-

173 Apparatus dior :finishing "slotted 'meterdisks-having spherical central .piortions, comprising means aEor; holding and-.2 rotating an :arborr adapted to carry: a cutter, and steadybearing! j aw's having a fixed: 'support' and arranged toiembrace'nearits outeri end, and to steady a'n arborsoheld andr'otated. L18. Apparatusforfinishing' slotted meterdisks having spherical centrl ajkportions, comprisingmeans' for holding and rotating an arbor adapted to -carry a cutter, a disk-sup- .portl'inioperative proximity-to arborholding means and arrangedto permit'oscillationabout ar'fixe d center-of 'a disk being actedupon-by said cutter, and steady-bearing aws for such an" arbor; said jaws having fiat side's adapting them to formguides for the disk. 1 :3

-In testimony whereof I have signed" this 'specificatiqn'in the presence of two subscribing witnesses. I 1 i v q: FRANK f i s er y 

